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Topic: Line of nodes

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	Orbital node - Wikipedia, the free encyclopedia
		The line of nodes is the intersection of the object's orbital plane with the plane of reference, and runs between the ascending and descending nodes.
		The symbol of the ascending node is ☊, descending node is ☋.
		The lunar nodes are subject to lunar precession, which is the gradual shift westward because of the gravitational pull of the Sun upon the Moon.
	en.wikipedia.org /wiki/Orbital_node (227 words)

	HighBeam Encyclopedia - node
		NODE [node] in astronomy, point at which the orbit of a body crosses a reference plane.
		The lunar nodes are the points where the moon's line of nodes, when extended, strike the celestial sphere.
		The ascending node, when the sun appears to cross the celestial equator from south to north, is the vernal equinox ; the descending node is the autumnal equinox.
	www.encyclopedia.com /html/n1/node.asp (484 words)

	Luna Nodes
		The line of intersection is the axis formed by the Moon's Nodes.
		The North Node is considered as the head of the dragon, while the south is considered to be the tail.
		In Vedic astrology, the Nodes are considered malefic, with Rahu being comparable to Saturn as Ketu is to Mars.
	www.angelfire.com /wizard/regulus_antares/luna_nodes.htm (1647 words)

	Celestial Alignments
		Since the plane of the moon's orbit is tilted at an angle to the earth's orbit, the planes intersect at a line, called the line of nodes.
		The node where the two intersect as the moon is crossing the earth's orbit traveling northward is called the ascending node.
		Since the direction of rotation of the moon's nodes is westward and opposite the direction of most motion in the solar system, the rotation of the moon's nodes is called regression of the nodes.
	ourworld.compuserve.com /homepages/bmoler/alignmnt.htm (1069 words)

	ASTR 121, O'CONNELL. Study Guide 5 [Spring 2004]
		Therefore, the Moon MUST BE near one of its nodes AND that node must lie almost directly on the line running from the Sun through the Earth for eclipses to occur.
		The change in the line of nodes also produces changes in the extreme northerly or southerly positions of the Moon as seen from Earth by +/- 5 degrees.
		Lines drawn through Station Stones 92 and 93 or 91 and 94 align with the N/S maxima of the Moon's rise or set during the 18.6-year nodal revolution cycle.
	www.astro.virginia.edu /class/oconnell/astr121/guide05-s04.html (1702 words)

	About points and nodes (Site not responding. Last check: 2007-10-02)
		Nodes can either be part of a figure, such as a line end, or can be an individual node, placed as reference geometry.
		A node represents X and Y coordinates in a 2D drawing or in a 3D workspace while in Sketch mode.
		Nodes are useful for saving a reference point, so that you can delete a figure or reference geometry.
	www.alibre.com /WebHelp/reference_geometry/Points.htm (230 words)

	The Sirius Research Group (Site not responding. Last check: 2007-10-02)
		By about the year 67730, the line of nodes of Mercury will have turned over an additional 180 degrees with respect to that of Venus, and at that time the longitudes of the two ascending nodes will differ by 180 degrees, and so on.
		The lines of nodes, eccentricities and inclinations of all planets are subject to so-called secular variations.
		For instance, relative to inertial space, while the line of nodes of Venus rotates by -0.278 degree per century (the negative sign indicating retrograde motion), that of Mercury's orbit moves by -0.125 degree per century, that of Mars by -0.295 degree, that of Jupiter by +0.177 degree, and so on.
	siriusresearchgroup.com /experts/JM2.shtml (1345 words)

	On the Frequency of Eclipses (Site not responding. Last check: 2007-10-02)
		The northward-crossing one is known as the ascending node, whilst the one on the opposite side of the Earth, where the Moon crosses toward the south, is the descending node.
		Roughly twice a year the line of nodes (the straight line passing through both nodes) coincides with the Sun-Earth line, meaning the three bodies can fully align and eclipses are possible.
		This means that the line of nodes slowly rotates in the opposite direction to the Moon's movement, an effect called the regression of the nodes.
	www.inconstantmoon.com /cyc_ecl2.htm (546 words)

	The Sirius Research Group
		Assuming that the line of nodes remains situated exactly between transit pairs, the theoretical rate of node movement would be 32.88" per tropical year.
		IF such a retrograde motion of Venus' line of nodes is a real motion with respect to the Sun and inertial space, it would have to exist regardless of precession; i.e.
		Hence, the retrograde motion of Venus' line of nodes relative to inertial space is an apparent motion caused by the same celestial phenomenon that produces precession or the apparent motion of the sphere of the fixed stars - namely, the binary motion of our Sun.
	siriusresearchgroup.com /articles/251.shtml (864 words)

	Why Line Arrays?
		Lines of intersection are "nodes." This is where waves interfere constructively, making the wave stronger.
		The nodes form a linear front, represented by the horizontal lines of intersection appearing in the model.
		In speakers, a line array is a column of closely and evenly spaced drivers.
	www.kerrville-music.com /jacobsaudio/whyline.htm (675 words)

	6 Input files
		The first file type, the channels file, links the nodes in the geometry to specific time signals in a data file; without channel mapping, the only possible assumption is that each node i in the geometry corresponds to the same time signal i in the data file.
		However, each line consists of two values, 1) the number of the associated channel and 2) the text string to be used as the label when map3d marks the nodes with channel numbers.
		There is one line in the file for each node of the geometry to which we wish to associate scalar data.
	software.sci.utah.edu /map3d-5.4_docs/map3d-6.html (2829 words)

	Binary Star Orbits
		At one node (called the ascending node) the orbiting star would be moving away from the Earth; this is the ascending node.
		The line to the ascending node is particularly important in describing the orbit.
		The angle between the ascending node and the direction towards the north celestial pole (NCP) is the position angle of the ascending node and is denoted by
	www.physics.csbsju.edu /orbit/binary.html (603 words)

	Eclipse Animation (Site not responding. Last check: 2007-10-02)
		From the view of a position trailing the Earth in its orbit, the earth is shown with the moon’s orbit, four positions of the moon (new, first quarter, full, and third quarter) and the line of nodes (the line of intersection of the ecliptic plane and the plane of the moon’s orbit).
		A draconic month is the duration of time for the moon to return to the same node along the line of nodes (approximately 27.21 days).
		A nodal period is the time it takes for the line of nodes to align in the same direction towards the sun (approximately 346.597 days).
	www.amherst.edu /~ccsp11 (375 words)

	[No title]
		If no nodes are specified, all LAM nodes are considered for scheduling; LAM will schedule the programs in a round-robin fashion, "wrapping around" (and scheduling mul tiple copies on a single node) if necessary.
		If and -c both are specified, then copies of the program are started on the specified nodes according to an internal LAM scheduling policy.
		If the file system is not shared, the target nodes are homo geneous, and the program is frequently recompiled, it can be convenient to have LAM transfer the program from a source node (usually the local node) to each target node.
	www.ibiblio.org /gferg/ldp/man/man1/lamexec.1.html (1552 words)

	Linear Partition of a Crease Network (Site not responding. Last check: 2007-10-02)
		Initially, all the crease network fragments belong to distinct lines, and all the crease network nodes are line end nodes.
		If we demand the approximation to be perfect then the crease lines would be the set of the crease fragments.
		Rising the threshold has for effect to diminish the total number of crease lines and to increase their length and their least-square error.
	www.ensc.sfu.ca /people/grad/brassard/personal/THESIS/node196.html (217 words)

	AST19203 (Site not responding. Last check: 2007-10-02)
		When the Moon is at apogee and on the line of nodes at new Moon phase, the type of eclipse one would see if on the centerline of the path would be a(n) _________________________ eclipse.
		The time it takes to go from one alignment of the line of nodes with the Sun pointing toward the Sun to the next is called the _________________________.
		The _________________________ is an interval of time for an eclipse to occur at the same latitude, with the exact same alignment of Sun, Moon, and line of nodes, and corresponds to a time period of about _________________________ days.
	www.louisville.edu /~jsmill01/newast192/AST19203.html (427 words)

	Background: Orbits of artificial satellites (Site not responding. Last check: 2007-10-02)
		The orbit intersects the Earth's equatorial plane at two points: the ascending node when it moves from the southern to the northern hemisphere, and the descending node when it moves from the northern to the southern hemisphere.
		Argument of perigee: the angle measured in the orbital plane from the ascending node to the perigee.
		Right ascension of the ascending node: the angle in the equatorial plane between the line of nodes and the direction to the vernal equinox, measured from the vernal equinox (the direction of the intersection of the ecliptic and equatorial planes) towards the ascending node.
	www.spenvis.oma.be /spenvis/help/background/orbtheor.html (418 words)

	Center for Parallel Computers - Services at PDC (Site not responding. Last check: 2007-10-02)
		The Submit line and Nodes and time marked areas will show the nodes and the time you have currently selected, as well as the light blue block drawn in the diagram.
		In the Nodes wanted field, you enter the number of nodes and their types, in a syntax identical to the one you use while using the spsubmit command on Strindberg, with the exception that here, you have to specify a node type.
		This window shows the color in which the different node types are painted, and presents possibilities to view only certain node types in the diagram, and also to show a small info window with addidional information about each node type.
	www.pdc.kth.se /sp/sptetris/guide.html (622 words)

	Project NOVA
		The Moon's orbit is inclined at an angle of 5o to the plane of the ecliptic (the apparent yearly path of the Sun against the background of stars).
		The line joining tem, which is also the line of intersection of the Earth's and the Moon's orbital planes, is known as the line of nodes.
		The line of nodes swings through 19o each year around the Earth's center, therefore, the position of the nodes is not the same from year to year.
	www.uncfsu.edu /msec/nova/timmod5e.htm (957 words)

	node
		The lunar nodes are the points where the moon's line of nodes, when extended, strike the
		The ascending node, when the sun appears to cross the celestial equator from south to north, is the vernal
		; the descending node is the autumnal equinox.
	www.factmonster.com /ce6/sci/A0835793.html (237 words)

	Configuring Dual Shelf Nodes
		To include the two shelves as one node in the network topology, you must configure the patch connection between the shelves in the CLI (command-line interface).
		When a dual shelf node is part of a network topology, the channels supported by it might require special configuration.
		On a dual shelf node, the OSC might have only one connection, such as the configuration shown in Figure 6-4, or no OSC connections at all, such as the configuration shown in Figure 6-2.
	www.cisco.com /univercd/cc/td/doc/product/mels/15540/121_ev2/config/12669dua.htm (1107 words)

	Points and nodes (Site not responding. Last check: 2007-10-02)
		Every figure has nodes that let you change the position or size of the figure.
		Individual nodes are useful for saving a reference point, so that you can delete a figure or reference geometry you no longer need.
		A node exists at each location you click as the figure is sketched.
	www.alibre.com /WebHelp/models/parts/sketches/UGPoints_and_nodes.htm (154 words)

	Eclipses
		B the moon must be on the line of nodes.
		C the sun and the moon must be on the line of nodes.
		D the sun and the moon must be near the line of nodes.
	webs.wichita.edu /astronomy/Testbank/eclipses.htm (919 words)

	line of nodes Comparison Table (Site not responding. Last check: 2007-10-02)
		abstraction > mathematical concept > geometrical object > line > line of nodes
		Next line: axis Up: line Previous line: line of apsides
		The intersection between the orbital plane of the Moon or a planet and the plane of the ecliptic.
	www.site.uottawa.ca:4321 /astronomy/lineofnodes_table.html (51 words)

	Warp
		The line of nodes is close to the Sun-centre line.
		The expected kinematic pattern (at least, in existing plausible models) is most strongly constrained by the straightness of the line of nodes: these should wind up in at most a few rotation times, typically less than 2 Gyr.
		Along lines of sight with typical reddening, the study of the Galactic warp will be within the limits of GAIA's performance.
	www.rssd.esa.int /SA-general/Projects/GAIA_files/LATEX2HTML/node22.html (546 words)

	What Are Keplerian Elements?
		"Right ascension of ascending node" is an angle, measured at the center of the earth, from the vernal equinox to the ascending node.
		Draw a line from the center of the earth to the point where our satellite crosses the equa- tor (going from south to north).
		Where any two lines intersect, they form two complimentary angles, so to be specific, we say that argument of perigee is the angle (measured at the center of the earth) from the ascending node to perigee.
	www.amsat.org /amsat/articles/houston-net/kep.html (1237 words)

	What does Perigee mean?
		The intersection of the equatorial plane and the orbital plane is a line which is called the line of nodes.
		Finally, "right ascension of ascending node" is an angle, measured at the center of the earth, from the vernal equinox to the ascending node.
		We've already identified another line passing through the center of the earth: the line of nodes.
	www.perigee.net /kepmodel.html (2774 words)

	The Webfooted Astronomer: October Meeting Minutes
		Looking at the apparent movement of the sun and moon around the Earth, there are nodes in which the sun’s apparent orbit and the moon’s ap parent orbit intersect.
		(The line of nodes.) It is only at the line of nodes that the moon, with an orbital inclination of 5 degrees, intersects the ecliptic.
		This line of nodes rotates relative to the stars every 18.6 years.
	www.seattleastro.org /webfoot/oct99/minutes.htm (1126 words)

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